Ford Mustang (1999-2004) Service Manual: Transmission Description (Description and Operation)
The 4R70W has the following features:
- Wide ratio gears
- Four speeds
- Rear wheel drive
- Automatic
- Electronic shift
- Torque converter clutch control
- Line pressure controls
The transmission uses Ravigneaux-style double-pinion gearset with two bands, one one-way roller clutch, one mechanical diode and four friction clutches to produce four forward gears and Reverse.
4R70W Automatic Transmission

Automatic Transaxle/Transmission
General Specifications
a - MERCON V is not interchangeable at this time with the current MERCON
fluids. Check the
transmission fluid level indicator to determine the correct fluid and refer to
the ...
Identification Tags
All vehicles are equipped with a Vehicle Certification Label, located
on the driver side door lock post.
For correct transmission identification, refer to the code in the space
marked TR.
...
Other materials:
Transmission (DISASSEMBLY)
Special Tool(s)
Slide Hammer
100-001 (T50T-100-A)
Holding Fixture, Transmission
307-003 (T57L-500-B)
Slide Hammer
307-005 (T59L-100-B)
Remover, Transmission Fluid
Seal
307-048 (T74P-77248-A)
...
Gearshift Rail and Fork
Disassembly and Assembly
1. Disassemble the first/second and third/fourth shift rail as follows:
Rotate the interlock plate until it is opposite of the shift links.
Slide off the third/fourth shift fork and shift link. Separate the link
from the ...
Cylinder Head - Distortion
Special Tool(s)
Straight Edge
303-D039 (D83L-4201-A) or
equivalent
1. Use a straight edge and a feeler gauge to inspect the cylinder head for
flatness. If the cylinder
head is distorted, install a new cylinder head.
Cylinder Bore -Cleaning ...
